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List of numbers - Integers

10000 100000 1000000

Cardinal One hundred thousand
Ordinal One hundred thousandth
Factorization 25 · 55
Roman numeral C
Binary 11000011010100000
Hexadecimal 186A0

One hundred thousand (100000) is the natural number following 99999 and preceding 100001.

In South Asia, one hundred thousand is called a lakh. In Thai language, Lao language and Vietnamese there is a separate word for this number, แสน, ແສນ [saen] and ức [uc].

In scientific notation, it is written as 105.

In astronomy, 100,000 metres, 100 kilometres, or 100 km (62 miles) is the altitude at which the Fédération Aéronautique Internationale (FAI) defines spaceflight to begin.

In the Irish Language, Ceád Mile Fáilte (pronounced: KAY-ed MEE-luh FOIL-cha) is a popular greeting meaning "A Hundred Thousand Welcomes".

In piphilology, one hundred thousand is the current world record for the number of digits of pi memorized by a human being.

Selected 6-digit numbers (100001 - 999999)

  • 100255 - Friedman number
  • 100525 - Friedman number
  • 102564 - The smallest parasitic number
  • 103680 - highly totient number
  • 103823 - nice Friedman number
  • 105664 - harmonic divisor number
  • 111111 - repunit
  • 111777 - smallest natural number requiring 17 syllables in American English, 19 in British English
  • 113634 - Motzkin number for n = 14
  • 114689 - prime factor of F12
  • 115975 - Bell number
  • 117067 - first prime vampire number
  • 117649 = 76
  • 117800 - harmonic divisor number
  • 120284 - Keith number
  • 120960 - highly totient number
  • 121393 - Fibonacci number
  • 124000 - number with religious significance
  • 127777 - smallest natural number requiring 18 syllables in American English, 20 in British English
  • 127912 - Wedderburn-Etherington number
  • 128981 - Starts the first prime gap sequence of 2, 4, 6, 8, 10, 12, 14
  • 129106 - Keith number
  • 131071 - Mersenne prime
  • 131072 = 217
  • 131361 - Leyland number
  • 134340 - Pluto's minor planet designation
  • 135137 - Markov number
  • 142857 - Kaprekar number, Harshad number' smallest cyclic number in decimal.
  • 144000 - number with religious significance
  • 147640 - Keith number
  • 148149 - Kaprekar number
  • 156146 - Keith number
  • 161051 = 115
  • 161280 - highly totient number
  • 167400 - harmonic divisor number
  • 173600 - harmonic divisor number
  • 174680 - Keith number
  • 174763 - Wagstaff prime
  • 177147 = 311
  • 177777 - smallest natural number requiring 19 syllables in American English, 21 in British English
  • 178478 - Leyland number
  • 181440 - highly totient number
  • 181819 - Kaprekar number
  • 183186 - Keith number
  • 187110 - Kaprekar number
  • 195025 - Pell number, Markov number
  • 196418 - Fibonacci number, Markov number
  • 196883 - the dimension of the smallest nontrivial irreducible representation of the Monster group
  • 196884 - the coefficient of q in the Fourier series expansion of the j function. The adjacency of 196883 and 196884 was important in suggesting monstrous moonshine.
  • 207360 - highly totient number
  • 208012 - Catalan number
  • 208335 - the largest number to be both triangular and square pyramidal
  • 208495 - Kaprekar number
  • 222222 - repdigit
  • 237510 - harmonic divisor number
  • 241920 - highly totient number
  • 242060 - harmonic divisor number
  • 248832 - the smallest fifth power that can be represented as the sum of only 6 fifth powers.
  • 261119 - Carol number
  • 262144 = 218; exponential factorial of 4; a superperfect number
  • 262468 - Leyland number
  • 263167 - Kynea number
  • 268705 - Leyland number
  • 274177 - prime factor of F6
  • 279936 = 67
  • 280859 - a 6-digit prime number whose square (algebra) is tridigital.
  • 293547 - Wedderburn-Etherington number
  • 294685 - Markov number
  • 298320 - Keith number
  • 310572 - Motzkin number
  • 317811 - Fibonacci number
  • 318682 - Kaprekar number
  • 326981 - alternating factorial
  • 329967 - Kaprekar number
  • 332640 - harmonic divisor number
  • 333333 - repdigit
  • 333667 - sexy prime and unique prime
  • 333673 - sexy prime
  • 333679 - sexy prime
  • 351352 - Kaprekar number
  • 355419 - Keith number
  • 356643 - Kaprekar number
  • 360360 - harmonic divisor number
  • 362880 = 9!, highly totient number
  • 370261 - first prime followed by a prime gap of over 100
  • 371293 = 135
  • 389305 - self-descriptive number in base 7
  • 390313 - Kaprekar number
  • 390625 = 58
  • 397585 - Leyland number
  • 409113 - sum of the first nine factorials
  • 422481 - smallest number whose fourth power is the sum of three smaller fourth powers
  • 423393 - Leyland number
  • 444444 - repdigit
  • 461539 - Kaprekar number
  • 426389 - Markov number
  • 466830 - Kaprekar number
  • 470832 - Pell number
  • 483840 - highly totient number
  • 499393 - Markov number
  • 499500 - Kaprekar number
  • 500500 - Kaprekar number, sum of first 1000 integers
  • 509203 - Riesel number
  • 510510 - the product of the first 7 prime numbers, thus the 7th primorial
  • 514229 - Fibonacci prime, Markov number
  • 524287 - Mersenne prime
  • 524288 = 219, power of two
  • 524649 - Leyland number
  • 531441 = 312
  • 533169 - Leyland number
  • 533170 - Kaprekar number
  • 539400 - harmonic divisor number
  • 548834 - equal to the sum of the sixth powers of its digits
  • 555555 - repdigit
  • 646018 - Markov number
  • 666666 - repdigit
  • 676157 - Wedderburn-Etherington number
  • 678570 - Bell number
  • 694280 - Keith number
  • 695520 - harmonic divisor number
  • 720720 - colossally abundant number
  • 725760 - highly totient number
  • 726180 - harmonic divisor number
  • 742900 - Catalan number
  • 753480 - harmonic divisor number
  • 777777 - repdigit, smallest natural number requiring 20 syllables in American English, 22 in British English
  • 823543 = 77
  • 832040 - Fibonacci number
  • 853467 - Motzkin number
  • 888888 - repdigit
  • 925765 - Markov number
  • 925993 - Keith number
  • 950976 - harmonic divisor number
  • 967680 - highly totient number
  • 999999 - repdigit, see also Feynman point
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